X-ray-machine stand.



J. ZSABKA.

X-RAY MACHLNE STAND.

APPLICATlON FILED 1AN.2. 191a.

Patented July 23, 1918.

2 SHEETS-SHEET l v A TTUR/VEV J. ZSABKA.

ACHINE STAND.

APPLICA N FILED JAN.2.1918

Patented July 23, 1918..

Z SHEETS-SHEET 2- M T N F. V N I JULIUS ZSABKA, OF NEW YORK, N. it.

X-RAY-MACHINJE STAND.

Application/filed January 2, 1918.

To all whom it may concern:

Be it known that][, JULIUS ZSABKA, a subject of the King of Hungary,resident of New York, county of New York, and State of New York, haveinvented certain new and useful Improvements in X-Ray-Macl1ine Stands,of which the following is a specification. 7 I

This invention relates to improvements in stands, and particularly totypes used in connection with X-ray machines, dental appliances, and thelike.

The principal object of the invention 'is to provide a stand, having arotatably mounted column supporting a vertically slidable carriage, thesame being counterweighted and provided with devices by which it may beclamped securely at any desired height.

This and other by the novel construction and combination of partshereinafter described and shown in the accompanying drawings, forming amaterial part of this specification, and in which Figure 1 is asideelevational view, show ing a stand, made in accordance with theinvention,.parts being broken away in order to disclose the interior.

Fig. 2is an enlarged sectional on line 22 of Fig. 3.

Fig. 3 is a fragmental side elevational view of the carriage supportingcolumn.

Fig. i is an enlarged side elevational and sectional view, showing thelower part of the column and stand, .and

Fig. 5 is a transversesectional on line 5-5 of Fig. 1.

n carrying out the invention, use is made of a base 10,havinga-plurality of extending feet elements 11, the base being threadedto receive a bushing 12, having an axial bore 11, to which is fitted thesolid end 15 of the tubular column 16, the same resting normally upon ananti-frictional bearing 18, at the top of the bore 141 and held inposition by a ring '19, the end of the spindle 15 being extendeddownward so as to be supported at the bottom of the bore 14. J

carriage is slidably arranged upon the column, the same con isting. ofapair of spaced rings 20, having four extending projections 21, in whichare secured connecting bars 22, while extending from the upper and lowerrings are rotatably mounted wheels 25, having a conview taken view takenSpecification of Letters Patent.

like objects are attained brackets 24, in which are Serial It 0.209,913.

cave periphery adapted to make contact with the column 16, as thecarriage is moved up and down.

Secured to the upper band 20 is an eye 27, containing the end of a cord28, thesame extending upward around a pulley 30 mounted at the top ofthe column 16 and passing downward in its hollow interior, its lower endbeing engaged with a counterweight 31, balancing the weight of thecarriage and the parts which it supports.

The bars 22 are connected by a yoke 33, secured by the screws 34. Saidyoke is suited to receive a sliding bar 35, which may be clamped inposition by the screw 36. platform or the like may be carried at the endof the bar, for supportingpurposes.

From the foregoing it will be seen that the column may readily rotateupon the anti-frictional bearing, and the carriage can be moved alongthe column by pressure applied at any point therealong or to theplatform 38 carried by it.

In Figs. 4 and 5 a modified is shown in which means are provided forclamping the counterweight 31, the same having a groove 11, formedlongitudinally on one side, receptive of a clamp bar 40, hingedlyengaged in its upper end at the top and extending longitudinallydownward within the column, engaging within the arrangement groove 11 ofthe counterweight, the bar having at its lower end the stem 13, of ascrew 44, threaded through the column 16 in order to move transverselywhen the head 1-5 is turned.

The stem 43 is clamped to the bar 40, by means of a bushing ac, whichextends through the opposite side of the column 16.

Having thus described my invention what T claim as new and desire tosecure by Letters Patent, is, i

1.111 a stand of the class described, the combination with a rigid base,a column journaled to rotate freely therein, a can riage slidable alongsaid column, Wheels interposed between said carriage and column wherebythe former may be moved freely therealong, a cord attached to saidcarriage, a pulley at the top of said column over which said cord runs,and a counterweight movable within said column, said counterweight beingsecured to the opposite end of the cord. I p j 2. Tn a stand of theclass described, the combination with a rigid base and a hollow Patentedunit as, rates column rotatably mounted therein, of a carriage slidableon said column;'anti-frictional elements between said carriage and saidcolumn, a counter-balance for said carriage, said counter-balance beingmovable within said column, and means for clamping said counter-balanceat any point within said column, whereby said carriage may be rigidlysupported.

3. In a stand of the class described, the combination with a rigid baseand a hollow column rotatably mounted therein, of a carriage movablealong said column, a cord attached to said carriage, a pulley at the'topattached, a bar within said column hinged thereto at its upper end saidcounterweight having recesses receptive of said bar and 20 a screwoperable from the exterior of said column whereby said bar is caused toclamp said counterweight at any within its length.

desired point In testimony whereof I have allixed my 25 signature.

JULIUS ZSABKA.

